As part of a trial the hospital is undertaking, anyone who arrives at the ED is being assessed against coronavirus criteria at the front entrance.
But staff in charge of this, who are in personal protection equipment as a precaution, are having to redirect non-ED patients, visitors, and staff to other entrances of the hospital.
The DHB said anyone in need of ED care who entered the hospital via another entrance could be directed there from the main reception or by a Wellington Hospitals Foundation volunteer.
Meanwhile, routine testing for Covid-19 is being rolled out across the country.
Health Minister David Clark said this would provide more clues about whether there is community transmission.
It will become part of the normal routine for testing for the common flu, and comes amid uncertainty about whether Covid-19 is being transmitted in the community.
DHBs in the Wellington and Southland regions are planning to open testing stations shortly.
Capital & Coast, Hutt Valley, and Wairarapa DHBs are providing a three-pronged response to Coronavirus.
A CCDHB spokesman said part of this response included the establishment of Community Based Assessment Clinics.
Locations for these clinics were being mapped to ensure communities with low primary care coverage and therefore who were more vulnerable, were being prioritised, he said.
"We continue to work closely with primary care around the response to Covid-19 in the Greater Wellington Region, including how the community clinics will be staffed."